David's Tech Blog

If you are looking for a way to prevent post/comment spam, account request spam, or to obscure email addresses, one of the better options at the moment appears to be reCAPTCHA.

There are several reasons to choose reCAPTCHA, some of which are outlined on the web site. Aside from having this done by someone who knows what they are doing and do it pretty well, one of the key benefits I see of using this particular system is that the text is fairly easy for a human to read. Recently on another site that used some other captcha system it took me three or four tries every time I had to solve the “puzzle.” reCAPTCHA doesn’t have that particularly annoying problem. You want to keep the spammers out, but you also want to avoid being so annoying to legitimate posters that they find some easier place to post.